/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Transforms/TransformGizmoDataBinder.h
Sets to destination mode (as opposed to delta mode). Calling this will update the bound values to reflect the current tracked gizmo transform. If the gizmo is in local coordinate mode and it has a custom reference transform, that will be used as the reference.
virtual void SetToDestinationMode()